Study of EGNOS accuracy and integrity in eastern Poland

Grunwald, Grzegorz; Bakuła, Mieczysław; Ciećko, Adam

doi:10.1017/aer.2016.66

Cited by 21 publications

(14 citation statements)

References 16 publications

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“…The differences in algorithms of these variants are: elevation mask (5° for PA and 2° for "en-route") and the maximum age of applied correction data according to Table 2. The values of HPL and VPL were determined on the basis of appropriate formulas: (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14) for GPS/EGNOS and (15)(16)(17) for autonomous GPS solution.…”

Section: Flight Testmentioning

confidence: 99%

“…The most promising results today are offered by SBAS systems which provide valuable and cost effective information for air community. The SBAS system used in Europe is called EGNOS, another operational today systems include the American Wide Area Augmentation System (WAAS), the Japanese MTSAT Satellite Augmentation System (MSAS) and the Indian GPS-Aided GEO Augmented and Navigation System (GAGAN) [6].…”

Section: Introductionmentioning

confidence: 99%

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Examination of Autonomous GPS and GPS/EGNOS Integrity and Accuracy for Aeronautical Applications

Ciećko

Grunwald

2017

Period. Polytech. Civil Eng.

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The Global Navigation Satellite System (GNSS) is increasinglyused in navigation and positioning in land, water and air applications.Although they are very useful and willingly employedin everyday live and commercial products, it must be stressedthat GNSS alone does not always provide adequate performance,particularly in demanding aeronautical applicationswhere high level of integrity is required. Integrity and accuracyof positioning are the key parameters in air navigation.The paper presents research on current values of GNSS accuracyand integrity in north-eastern Poland, the region whichuntil 2014 was out of official coverage of European GeostationaryNavigation Overlay Service (EGNOS) Open Service (OS).The integrity and accuracy of positioning of static point andflying aircraft was examined in order to check present usabilityof different GNSS techniques which can be deployed for enroute,approach and landing phase of a flight. Since the integritylevels in aviation are strictly dependent on the phase offlight and landing of an aircraft, the analyses were performedin two computational modes: positioning using GPS/EGNOSdata and using autonomous GPS. Both modes were calculatedin en-route variant and because with the use of EGNOS it ispossible to perform approach, GPS/EGNOS mode was alsoanalyzed in Precision Approach (PA) variant. Overall assessmentof the accuracy and integrity of positioning in the studiedvariants is at the satisfactory level, not exceeding the levelsdefined by official aviation regulations.

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Section: Flight Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Examination of Autonomous GPS and GPS/EGNOS Integrity and Accuracy for Aeronautical Applications

Ciećko

Grunwald

2017

Period. Polytech. Civil Eng.

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“…Two global models were selected for analysis: Klobuchar GPS and NeQuick G as well the local EGNOS model, which all were compared to GPS/EGNOS positioning without any ionospheric model. The European EGNOS is a system used for safety-of-life (SoL) applications and can be used in land, water and, above all, air traffic [16,17]. The main function of EGNOS is to deliver real-time data that can be applied by users to improve the accuracy of positioning and to get integrity information.…”

Section: Introductionmentioning

confidence: 99%

Klobuchar, NeQuick G, and EGNOS Ionospheric Models for GPS/EGNOS Single-Frequency Positioning under 6–12 September 2017 Space Weather Events

Ciećko

Grunwald

2020

Applied Sciences

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The ionosphere is one of the main factors affecting the accuracy of global navigation satellite systems (GNSS). It is a dispersive medium for radio signals, and for multi-frequency receivers, most of its effect can be removed. The problem is for the single-frequency devices, which must rely on a correction model. The motivation of this paper is the adoption of different ionospheric models in GPS/EGNOS (Global Positioning System/European Geostationary Navigation Overlay Service) positioning to mitigate the impact of geomagnetic storms. The aim of this article is to examine the accuracy of GPS/EGNOS single-frequency positioning. In all the examined solutions, GPS L1 data augmented with the EGNOS clock and ephemeris corrections were used in position calculation. The changes were only made to the ionospheric model. The examined scenarios are as follows: without any model (off), Klobuchar, NeQuick G, and EGNOS model. The analysed period is 6–12 September 2017, during which the last strong geomagnetic storm took place. In order to perform a reliable analysis, the study was conducted at three International GNSS Service (IGS) stations in different geographical latitudes, within the EGNOS APV-1 (Approach with Vertical Guidance) availability border. The obtained results prove that the EGNOS ionospheric model meets the aviation positioning accuracy criteria for the APV-1 approach during the studied geomagnetic storm. The EGNOS average horizontal positioning error of 0.75 m was on average almost two times lower than the other solutions. For vertical positioning, the EGNOS error of 0.93 m proved to be two times lower than those of the Klobuchar and NeQuick G models, while it was more than three times lower for the off solution.

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“…In the author’s opinion, since the presented multi-annual research results prove that this system permanently improves the positioning characteristics, its use in hydrography will soon be possible for all IHO orders. A significant increase in the EGNOS system’s accuracy over recent years has also been noted by other authors [40,41] and official regulations [42]. Despite this fact, the EGNOS system is still not used in hydrography [43], as one would expect.…”

Section: Resultsmentioning

confidence: 85%

Method of Evaluating the Positioning System Capability for Complying with the Minimum Accuracy Requirements for the International Hydrographic Organization Orders

Specht

2019

Sensors

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According to the IHO (International Hydrographic Organization) S-44 standard, hydrographic surveys can be carried out in four categories, the so-called orders—special, 1a, 1b, and 2—for which minimum accuracy requirements for the applied positioning system have been set out. These amount to, respectively: 2 m, 5 m, 5 m, and 20 m at a confidence level of 0.95. It is widely assumed that GNSS (Global Navigation Satellite System) network solutions with an accuracy of 2–5 cm (p = 0.95) and maritime DGPS (Differential Global Positioning System) systems with an error of 1–2 m (p = 0.95) are currently the two main positioning methods in hydrography. Other positioning systems whose positioning accuracy increases from year to year (and which may serve as alternative solutions) have been omitted. The article proposes a method that enables an assessment of any given navigation positioning system in terms of its compliance (or non-compliance) with the minimum accuracy requirements specified for hydrographic surveys. The method concerned clearly assesses whether a particular positioning system meets the accuracy requirements set out for a particular IHO order. The model was verified, taking into account both past and present research results (stationary and dynamic) derived from tests on the following systems: DGPS, EGNOS (European Geostationary Navigation Overlay Service), and multi-GNSS receivers (GPS/GLONASS/BDS/Galileo). The study confirmed that the DGPS system meets the requirements for all IHO orders and proved that the EGNOS system can currently be applied in measurements in the orders 1a, 1b, and 2. On the other hand, multi-GNSS receivers meet the requirements for order 2, while some of them meet the requirements for orders 1a and 1b as well.

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Study of EGNOS accuracy and integrity in eastern Poland

Cited by 21 publications

References 16 publications

Examination of Autonomous GPS and GPS/EGNOS Integrity and Accuracy for Aeronautical Applications

Examination of Autonomous GPS and GPS/EGNOS Integrity and Accuracy for Aeronautical Applications

Klobuchar, NeQuick G, and EGNOS Ionospheric Models for GPS/EGNOS Single-Frequency Positioning under 6–12 September 2017 Space Weather Events

Method of Evaluating the Positioning System Capability for Complying with the Minimum Accuracy Requirements for the International Hydrographic Organization Orders

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